ClientApplication $rotate-secret | Medplum

On this page

The $rotate-secret operation securely rotates client application credentials with zero downtime. It uses a two-phase rotation process: first moving the current secret to a "retiring" state while generating a new primary secret, then later removing the retiring secret—ensuring that active clients aren't immediately locked out during credential updates.

Regular credential rotation is a security best practice that limits the impact of compromised credentials and meets compliance requirements for many healthcare security frameworks.

Use Cases

• Security Best Practices: Implement regular credential rotation schedules (e.g., every 90 days)
• Incident Response: Quickly rotate credentials when a potential compromise is detected
• Compliance Requirements: Meet HIPAA, SOC 2, or other security framework requirements for credential management
• Zero-Downtime Rotation: Update credentials without disrupting active integrations during the transition period
• Automated Credential Management: Integrate with CI/CD pipelines or secret management tools for automated rotation

Invoke the $rotate-secret operation

[baseUrl]/ClientApplication/[id]/$rotate-secret

Parameters

Mutually Exclusive Parameters

One and only one of the secret and retiringSecret parameters must be provided, and must match the corresponding value in the ClientApplication.

Output

The operation returns the ClientApplication resource with the updated secret value.

• If the secret is provided and matches the current ClientApplication.secret, that value is copied into ClientApplication.retiringSecret (overwriting any other value there), and a new secret is securely generated and placed into ClientApplication.secret; both secrets can be used to grant application access
• If the retiringSecret parameter is provided and matches the current ClientApplication.retiringSecret value, the retiringSecret is removed from the resource and can no longer be used to grant application access

Examples

Fully rotate client secret:

// First, rotate the initial secret

const rotatedClient: ClientApplication = await medplum.post(

medplum.fhirUrl('ClientApplication', clientApplication.id, '$rotate-secret'),

{
    resourceType: 'Parameters',
    parameter: [{ name: 'secret', valueString: clientApplication.secret }],
  }
);

console.log('Client secret rotated; new secret is:', rotatedClient.secret);
console.log('Previous secret is still available for use:', rotatedClient.retiringSecret);

// At this point, existing application instances should be updated to use the new secret
// Once all use of the old (retiring) secret is resolved, rotate it out of service

await medplum.post(medplum.fhirUrl('ClientApplication', clientApplication.id, '$rotate-secret'), {
  resourceType: 'Parameters',
  parameter: [{ name: 'retiringSecret', valueString: rotatedClient.retiringSecret }],
});

// Now only the newly generated secret value will be valid